Finding the Third Proportional to 140,160 and 329,047.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,160 : 329,047.50 = 329,047.50 : x
2. Step 2: Convert to fraction form
   140,160/329,047.50 = 329,047.50/x
3. Step 3: Cross multiply
   140,160x = 329,047.50 × 329,047.50
4. Step 4: Simplify right side
   140,160x = 108,272,257,256.25
5. Step 5: Solve for x
   x = 108,272,257,256.25/140,160
6. Step 6: Final answer
   x = 772,490.42