Finding the Third Proportional to 64,435.50 and 141,939

Step by Step Solution

1. Step 1: Write the proportion equation
   64,435.50 : 141,939 = 141,939 : x
2. Step 2: Convert to fraction form
   64,435.50/141,939 = 141,939/x
3. Step 3: Cross multiply
   64,435.50x = 141,939 × 141,939
4. Step 4: Simplify right side
   64,435.50x = 20,146,679,721
5. Step 5: Solve for x
   x = 20,146,679,721/64,435.50
6. Step 6: Final answer
   x = 312,664.29