Finding the Third Proportional to 46,139.20 and 65,978.72

Step by Step Solution

1. Step 1: Write the proportion equation
   46,139.20 : 65,978.72 = 65,978.72 : x
2. Step 2: Convert to fraction form
   46,139.20/65,978.72 = 65,978.72/x
3. Step 3: Cross multiply
   46,139.20x = 65,978.72 × 65,978.72
4. Step 4: Simplify right side
   46,139.20x = 4,353,191,327.89
5. Step 5: Solve for x
   x = 4,353,191,327.89/46,139.20
6. Step 6: Final answer
   x = 94,349.08