Finding the Third Proportional to 57,621.38 and 77,677.31

Step by Step Solution

1. Step 1: Write the proportion equation
   57,621.38 : 77,677.31 = 77,677.31 : x
2. Step 2: Convert to fraction form
   57,621.38/77,677.31 = 77,677.31/x
3. Step 3: Cross multiply
   57,621.38x = 77,677.31 × 77,677.31
4. Step 4: Simplify right side
   57,621.38x = 6,033,764,877.22
5. Step 5: Solve for x
   x = 6,033,764,877.22/57,621.38
6. Step 6: Final answer
   x = 104,714.00