Finding the Third Proportional to 39,720.38 and 58,363.88

Step by Step Solution

1. Step 1: Write the proportion equation
   39,720.38 : 58,363.88 = 58,363.88 : x
2. Step 2: Convert to fraction form
   39,720.38/58,363.88 = 58,363.88/x
3. Step 3: Cross multiply
   39,720.38x = 58,363.88 × 58,363.88
4. Step 4: Simplify right side
   39,720.38x = 3,406,341,905.02
5. Step 5: Solve for x
   x = 3,406,341,905.02/39,720.38
6. Step 6: Final answer
   x = 85,758.05