Finding the Third Proportional to 89,259,856.50 and 137,929,234.50

Step by Step Solution

1. Step 1: Write the proportion equation
   89,259,856.50 : 137,929,234.50 = 137,929,234.50 : x
2. Step 2: Convert to fraction form
   89,259,856.50/137,929,234.50 = 137,929,234.50/x
3. Step 3: Cross multiply
   89,259,856.50x = 137,929,234.50 × 137,929,234.50
4. Step 4: Simplify right side
   89,259,856.50x = 19,024,473,729,755,992
5. Step 5: Solve for x
   x = 19,024,473,729,755,992/89,259,856.50
6. Step 6: Final answer
   x = 213,135,831.44