Finding the Third Proportional to 38,702.81 and 84,781.69

Step by Step Solution

1. Step 1: Write the proportion equation
   38,702.81 : 84,781.69 = 84,781.69 : x
2. Step 2: Convert to fraction form
   38,702.81/84,781.69 = 84,781.69/x
3. Step 3: Cross multiply
   38,702.81x = 84,781.69 × 84,781.69
4. Step 4: Simplify right side
   38,702.81x = 7,187,934,535.35
5. Step 5: Solve for x
   x = 7,187,934,535.35/38,702.81
6. Step 6: Final answer
   x = 185,721.25