Finding the Third Proportional to 42,680.25 and 61,478.16

Step by Step Solution

1. Step 1: Write the proportion equation
   42,680.25 : 61,478.16 = 61,478.16 : x
2. Step 2: Convert to fraction form
   42,680.25/61,478.16 = 61,478.16/x
3. Step 3: Cross multiply
   42,680.25x = 61,478.16 × 61,478.16
4. Step 4: Simplify right side
   42,680.25x = 3,779,563,695.90
5. Step 5: Solve for x
   x = 3,779,563,695.90/42,680.25
6. Step 6: Final answer
   x = 88,555.33