Finding the Third Proportional to 61,153.50 and 87,247.50

Step by Step Solution

1. Step 1: Write the proportion equation
   61,153.50 : 87,247.50 = 87,247.50 : x
2. Step 2: Convert to fraction form
   61,153.50/87,247.50 = 87,247.50/x
3. Step 3: Cross multiply
   61,153.50x = 87,247.50 × 87,247.50
4. Step 4: Simplify right side
   61,153.50x = 7,612,126,256.25
5. Step 5: Solve for x
   x = 7,612,126,256.25/61,153.50
6. Step 6: Final answer
   x = 124,475.73