Finding the Third Proportional to 148,540.50 and 320,754

Step by Step Solution

1. Step 1: Write the proportion equation
   148,540.50 : 320,754 = 320,754 : x
2. Step 2: Convert to fraction form
   148,540.50/320,754 = 320,754/x
3. Step 3: Cross multiply
   148,540.50x = 320,754 × 320,754
4. Step 4: Simplify right side
   148,540.50x = 102,883,128,516
5. Step 5: Solve for x
   x = 102,883,128,516/148,540.50
6. Step 6: Final answer
   x = 692,626.78