Finding the Third Proportional to 30,832.50 and 63,121.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,832.50 : 63,121.50 = 63,121.50 : x
2. Step 2: Convert to fraction form
   30,832.50/63,121.50 = 63,121.50/x
3. Step 3: Cross multiply
   30,832.50x = 63,121.50 × 63,121.50
4. Step 4: Simplify right side
   30,832.50x = 3,984,323,762.25
5. Step 5: Solve for x
   x = 3,984,323,762.25/30,832.50
6. Step 6: Final answer
   x = 129,224.80