Finding the Third Proportional to 30,187.69 and 65,561.91

Step by Step Solution

1. Step 1: Write the proportion equation
   30,187.69 : 65,561.91 = 65,561.91 : x
2. Step 2: Convert to fraction form
   30,187.69/65,561.91 = 65,561.91/x
3. Step 3: Cross multiply
   30,187.69x = 65,561.91 × 65,561.91
4. Step 4: Simplify right side
   30,187.69x = 4,298,363,551.13
5. Step 5: Solve for x
   x = 4,298,363,551.13/30,187.69
6. Step 6: Final answer
   x = 142,387.97