Finding the Third Proportional to 64,717,663.50 and 138,521,722.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,717,663.50 : 138,521,722.50 = 138,521,722.50 : x
2. Step 2: Convert to fraction form
   64,717,663.50/138,521,722.50 = 138,521,722.50/x
3. Step 3: Cross multiply
   64,717,663.50x = 138,521,722.50 × 138,521,722.50
4. Step 4: Simplify right side
   64,717,663.50x = 19,188,267,604,367,008
5. Step 5: Solve for x
   x = 19,188,267,604,367,008/64,717,663.50
6. Step 6: Final answer
   x = 296,491,970.92