Finding the Third Proportional to 30,139.59 and 65,353.71

Step by Step Solution

1. Step 1: Write the proportion equation
   30,139.59 : 65,353.71 = 65,353.71 : x
2. Step 2: Convert to fraction form
   30,139.59/65,353.71 = 65,353.71/x
3. Step 3: Cross multiply
   30,139.59x = 65,353.71 × 65,353.71
4. Step 4: Simplify right side
   30,139.59x = 4,271,107,533.30
5. Step 5: Solve for x
   x = 4,271,107,533.30/30,139.59
6. Step 6: Final answer
   x = 141,710.85