Finding the Third Proportional to 31,987,221 and 69,653,802

Step by Step Solution

1. Step 1: Write the proportion equation
   31,987,221 : 69,653,802 = 69,653,802 : x
2. Step 2: Convert to fraction form
   31,987,221/69,653,802 = 69,653,802/x
3. Step 3: Cross multiply
   31,987,221x = 69,653,802 × 69,653,802
4. Step 4: Simplify right side
   31,987,221x = 4,851,652,133,055,204
5. Step 5: Solve for x
   x = 4,851,652,133,055,204/31,987,221
6. Step 6: Final answer
   x = 151,674,699.50