Finding the Third Proportional to 19,909,507,291.31 and 42,658,833,915.56

Step by Step Solution

1. Step 1: Write the proportion equation
   19,909,507,291.31 : 42,658,833,915.56 = 42,658,833,915.56 : x
2. Step 2: Convert to fraction form
   19,909,507,291.31/42,658,833,915.56 = 42,658,833,915.56/x
3. Step 3: Cross multiply
   19,909,507,291.31x = 42,658,833,915.56 × 42,658,833,915.56
4. Step 4: Simplify right side
   19,909,507,291.31x = 1,819,776,111,035,502,559,232
5. Step 5: Solve for x
   x = 1,819,776,111,035,502,559,232/19,909,507,291.31
6. Step 6: Final answer
   x = 91,402,367,944.57