Finding the Third Proportional to 89,960,942 and 138,215,044.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,960,942 : 138,215,044.50 = 138,215,044.50 : x
2. Step 2: Convert to fraction form
   89,960,942/138,215,044.50 = 138,215,044.50/x
3. Step 3: Cross multiply
   89,960,942x = 138,215,044.50 × 138,215,044.50
4. Step 4: Simplify right side
   89,960,942x = 19,103,398,526,136,980
5. Step 5: Solve for x
   x = 19,103,398,526,136,980/89,960,942
6. Step 6: Final answer
   x = 212,352,139.73