Finding the Third Proportional to 64,705.50 and 141,439.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,705.50 : 141,439.50 = 141,439.50 : x
2. Step 2: Convert to fraction form
   64,705.50/141,439.50 = 141,439.50/x
3. Step 3: Cross multiply
   64,705.50x = 141,439.50 × 141,439.50
4. Step 4: Simplify right side
   64,705.50x = 20,005,132,160.25
5. Step 5: Solve for x
   x = 20,005,132,160.25/64,705.50
6. Step 6: Final answer
   x = 309,172.05