Finding the Third Proportional to 65,293.91 and 142,889.70

Step by Step Solution

1. Step 1: Write the proportion equation
   65,293.91 : 142,889.70 = 142,889.70 : x
2. Step 2: Convert to fraction form
   65,293.91/142,889.70 = 142,889.70/x
3. Step 3: Cross multiply
   65,293.91x = 142,889.70 × 142,889.70
4. Step 4: Simplify right side
   65,293.91x = 20,417,465,026.50
5. Step 5: Solve for x
   x = 20,417,465,026.50/65,293.91
6. Step 6: Final answer
   x = 312,700.91