Finding the Third Proportional to 42,060 and 65,115

Step by Step Solution

1. Step 1: Write the proportion equation
   42,060 : 65,115 = 65,115 : x
2. Step 2: Convert to fraction form
   42,060/65,115 = 65,115/x
3. Step 3: Cross multiply
   42,060x = 65,115 × 65,115
4. Step 4: Simplify right side
   42,060x = 4,239,963,225
5. Step 5: Solve for x
   x = 4,239,963,225/42,060
6. Step 6: Final answer
   x = 100,807.49