Finding the Third Proportional to 56,487 and 82,842.50

Step by Step Solution

1. Step 1: Write the proportion equation
   56,487 : 82,842.50 = 82,842.50 : x
2. Step 2: Convert to fraction form
   56,487/82,842.50 = 82,842.50/x
3. Step 3: Cross multiply
   56,487x = 82,842.50 × 82,842.50
4. Step 4: Simplify right side
   56,487x = 6,862,879,806.25
5. Step 5: Solve for x
   x = 6,862,879,806.25/56,487
6. Step 6: Final answer
   x = 121,494.85