Finding the Third Proportional to 90,468 and 129,856.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,468 : 129,856.50 = 129,856.50 : x
2. Step 2: Convert to fraction form
   90,468/129,856.50 = 129,856.50/x
3. Step 3: Cross multiply
   90,468x = 129,856.50 × 129,856.50
4. Step 4: Simplify right side
   90,468x = 16,862,710,592.25
5. Step 5: Solve for x
   x = 16,862,710,592.25/90,468
6. Step 6: Final answer
   x = 186,394.20