Finding the Third Proportional to 42,117.47 and 61,939.69

Step by Step Solution

1. Step 1: Write the proportion equation
   42,117.47 : 61,939.69 = 61,939.69 : x
2. Step 2: Convert to fraction form
   42,117.47/61,939.69 = 61,939.69/x
3. Step 3: Cross multiply
   42,117.47x = 61,939.69 × 61,939.69
4. Step 4: Simplify right side
   42,117.47x = 3,836,524,887.60
5. Step 5: Solve for x
   x = 3,836,524,887.60/42,117.47
6. Step 6: Final answer
   x = 91,091.06