Finding the Third Proportional to 61,627.50 and 90,247.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,627.50 : 90,247.50 = 90,247.50 : x
2. Step 2: Convert to fraction form
   61,627.50/90,247.50 = 90,247.50/x
3. Step 3: Cross multiply
   61,627.50x = 90,247.50 × 90,247.50
4. Step 4: Simplify right side
   61,627.50x = 8,144,611,256.25
5. Step 5: Solve for x
   x = 8,144,611,256.25/61,627.50
6. Step 6: Final answer
   x = 132,158.72