Finding the Third Proportional to 90,640 and 127,414.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,640 : 127,414.50 = 127,414.50 : x
2. Step 2: Convert to fraction form
   90,640/127,414.50 = 127,414.50/x
3. Step 3: Cross multiply
   90,640x = 127,414.50 × 127,414.50
4. Step 4: Simplify right side
   90,640x = 16,234,454,810.25
5. Step 5: Solve for x
   x = 16,234,454,810.25/90,640
6. Step 6: Final answer
   x = 179,109.17