Finding the Third Proportional to 19,909,507,310 and 42,658,833,954

Step by Step Solution

1. Step 1: Write the proportion equation
   19,909,507,310 : 42,658,833,954 = 42,658,833,954 : x
2. Step 2: Convert to fraction form
   19,909,507,310/42,658,833,954 = 42,658,833,954/x
3. Step 3: Cross multiply
   19,909,507,310x = 42,658,833,954 × 42,658,833,954
4. Step 4: Simplify right side
   19,909,507,310x = 1,819,776,114,314,943,397,888
5. Step 5: Solve for x
   x = 1,819,776,114,314,943,397,888/19,909,507,310
6. Step 6: Final answer
   x = 91,402,368,023.49