Finding the Third Proportional to 91,443,123 and 139,308,471

Step by Step Solution

1. Step 1: Write the proportion equation
   91,443,123 : 139,308,471 = 139,308,471 : x
2. Step 2: Convert to fraction form
   91,443,123/139,308,471 = 139,308,471/x
3. Step 3: Cross multiply
   91,443,123x = 139,308,471 × 139,308,471
4. Step 4: Simplify right side
   91,443,123x = 19,406,850,092,357,840
5. Step 5: Solve for x
   x = 19,406,850,092,357,840/91,443,123
6. Step 6: Final answer
   x = 212,228,645.04