Finding the Third Proportional to 144,848.25 and 216,432

Step by Step Solution

1. Step 1: Write the proportion equation
   144,848.25 : 216,432 = 216,432 : x
2. Step 2: Convert to fraction form
   144,848.25/216,432 = 216,432/x
3. Step 3: Cross multiply
   144,848.25x = 216,432 × 216,432
4. Step 4: Simplify right side
   144,848.25x = 46,842,810,624
5. Step 5: Solve for x
   x = 46,842,810,624/144,848.25
6. Step 6: Final answer
   x = 323,392.31