Finding the Third Proportional to 170,232 and 257,716.50

Step by Step Solution

1. Step 1: Write the proportion equation
   170,232 : 257,716.50 = 257,716.50 : x
2. Step 2: Convert to fraction form
   170,232/257,716.50 = 257,716.50/x
3. Step 3: Cross multiply
   170,232x = 257,716.50 × 257,716.50
4. Step 4: Simplify right side
   170,232x = 66,417,794,372.25
5. Step 5: Solve for x
   x = 66,417,794,372.25/170,232
6. Step 6: Final answer
   x = 390,160.45