Finding the Third Proportional to 35,223.61 and 54,139.64

Step by Step Solution

1. Step 1: Write the proportion equation
   35,223.61 : 54,139.64 = 54,139.64 : x
2. Step 2: Convert to fraction form
   35,223.61/54,139.64 = 54,139.64/x
3. Step 3: Cross multiply
   35,223.61x = 54,139.64 × 54,139.64
4. Step 4: Simplify right side
   35,223.61x = 2,931,100,687.00
5. Step 5: Solve for x
   x = 2,931,100,687.00/35,223.61
6. Step 6: Final answer
   x = 83,214.09