Finding the Third Proportional to 148,348 and 328,726

Step by Step Solution

1. Step 1: Write the proportion equation
   148,348 : 328,726 = 328,726 : x
2. Step 2: Convert to fraction form
   148,348/328,726 = 328,726/x
3. Step 3: Cross multiply
   148,348x = 328,726 × 328,726
4. Step 4: Simplify right side
   148,348x = 108,060,783,076
5. Step 5: Solve for x
   x = 108,060,783,076/148,348
6. Step 6: Final answer
   x = 728,427.64