Finding the Third Proportional to 89,727 and 139,331.25

Step by Step Solution

1. Step 1: Write the proportion equation
   89,727 : 139,331.25 = 139,331.25 : x
2. Step 2: Convert to fraction form
   89,727/139,331.25 = 139,331.25/x
3. Step 3: Cross multiply
   89,727x = 139,331.25 × 139,331.25
4. Step 4: Simplify right side
   89,727x = 19,413,197,226.56
5. Step 5: Solve for x
   x = 19,413,197,226.56/89,727
6. Step 6: Final answer
   x = 216,358.48