Finding the Third Proportional to 61,615.13 and 99,199.69

Step by Step Solution

1. Step 1: Write the proportion equation
   61,615.13 : 99,199.69 = 99,199.69 : x
2. Step 2: Convert to fraction form
   61,615.13/99,199.69 = 99,199.69/x
3. Step 3: Cross multiply
   61,615.13x = 99,199.69 × 99,199.69
4. Step 4: Simplify right side
   61,615.13x = 9,840,578,000.10
5. Step 5: Solve for x
   x = 9,840,578,000.10/61,615.13
6. Step 6: Final answer
   x = 159,710.43