Finding the Third Proportional to 42,684.47 and 61,666.31

Step by Step Solution

1. Step 1: Write the proportion equation
   42,684.47 : 61,666.31 = 61,666.31 : x
2. Step 2: Convert to fraction form
   42,684.47/61,666.31 = 61,666.31/x
3. Step 3: Cross multiply
   42,684.47x = 61,666.31 × 61,666.31
4. Step 4: Simplify right side
   42,684.47x = 3,802,734,097.35
5. Step 5: Solve for x
   x = 3,802,734,097.35/42,684.47
6. Step 6: Final answer
   x = 89,089.41