Finding the Third Proportional to 64,858.50 and 141,455.25

Step by Step Solution

1. Step 1: Write the proportion equation
   64,858.50 : 141,455.25 = 141,455.25 : x
2. Step 2: Convert to fraction form
   64,858.50/141,455.25 = 141,455.25/x
3. Step 3: Cross multiply
   64,858.50x = 141,455.25 × 141,455.25
4. Step 4: Simplify right side
   64,858.50x = 20,009,587,752.56
5. Step 5: Solve for x
   x = 20,009,587,752.56/64,858.50
6. Step 6: Final answer
   x = 308,511.42