Finding the Third Proportional to 42,685.50 and 62,644.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,685.50 : 62,644.31 = 62,644.31 : x
2. Step 2: Convert to fraction form
   42,685.50/62,644.31 = 62,644.31/x
3. Step 3: Cross multiply
   42,685.50x = 62,644.31 × 62,644.31
4. Step 4: Simplify right side
   42,685.50x = 3,924,309,888.60
5. Step 5: Solve for x
   x = 3,924,309,888.60/42,685.50
6. Step 6: Final answer
   x = 91,935.43