Finding the Third Proportional to 148,418 and 328,848

Step by Step Solution

1. Step 1: Write the proportion equation
   148,418 : 328,848 = 328,848 : x
2. Step 2: Convert to fraction form
   148,418/328,848 = 328,848/x
3. Step 3: Cross multiply
   148,418x = 328,848 × 328,848
4. Step 4: Simplify right side
   148,418x = 108,141,007,104
5. Step 5: Solve for x
   x = 108,141,007,104/148,418
6. Step 6: Final answer
   x = 728,624.61