Finding the Third Proportional to 39,805.50 and 83,931

Step by Step Solution

1. Step 1: Write the proportion equation
   39,805.50 : 83,931 = 83,931 : x
2. Step 2: Convert to fraction form
   39,805.50/83,931 = 83,931/x
3. Step 3: Cross multiply
   39,805.50x = 83,931 × 83,931
4. Step 4: Simplify right side
   39,805.50x = 7,044,412,761
5. Step 5: Solve for x
   x = 7,044,412,761/39,805.50
6. Step 6: Final answer
   x = 176,970.84