Finding the Third Proportional to 19,580,830 and 42,415,970

Step by Step Solution

1. Step 1: Write the proportion equation
   19,580,830 : 42,415,970 = 42,415,970 : x
2. Step 2: Convert to fraction form
   19,580,830/42,415,970 = 42,415,970/x
3. Step 3: Cross multiply
   19,580,830x = 42,415,970 × 42,415,970
4. Step 4: Simplify right side
   19,580,830x = 1,799,114,511,040,900
5. Step 5: Solve for x
   x = 1,799,114,511,040,900/19,580,830
6. Step 6: Final answer
   x = 91,881,422.34