Finding the Third Proportional to 42,690 and 62,931

Step by Step Solution

1. Step 1: Write the proportion equation
   42,690 : 62,931 = 62,931 : x
2. Step 2: Convert to fraction form
   42,690/62,931 = 62,931/x
3. Step 3: Cross multiply
   42,690x = 62,931 × 62,931
4. Step 4: Simplify right side
   42,690x = 3,960,310,761
5. Step 5: Solve for x
   x = 3,960,310,761/42,690
6. Step 6: Final answer
   x = 92,769.05