Finding the Third Proportional to 91,443,080 and 139,308,398

Step by Step Solution

1. Step 1: Write the proportion equation
   91,443,080 : 139,308,398 = 139,308,398 : x
2. Step 2: Convert to fraction form
   91,443,080/139,308,398 = 139,308,398/x
3. Step 3: Cross multiply
   91,443,080x = 139,308,398 × 139,308,398
4. Step 4: Simplify right side
   91,443,080x = 19,406,829,753,326,404
5. Step 5: Solve for x
   x = 19,406,829,753,326,404/91,443,080
6. Step 6: Final answer
   x = 212,228,522.41