Finding the Third Proportional to 661,216 and 1,432,320

Step by Step Solution

1. Step 1: Write the proportion equation
   661,216 : 1,432,320 = 1,432,320 : x
2. Step 2: Convert to fraction form
   661,216/1,432,320 = 1,432,320/x
3. Step 3: Cross multiply
   661,216x = 1,432,320 × 1,432,320
4. Step 4: Simplify right side
   661,216x = 2,051,540,582,400
5. Step 5: Solve for x
   x = 2,051,540,582,400/661,216
6. Step 6: Final answer
   x = 3,102,678.37