Finding the Third Proportional to 721,424 and 1,551,382

Step by Step Solution

1. Step 1: Write the proportion equation
   721,424 : 1,551,382 = 1,551,382 : x
2. Step 2: Convert to fraction form
   721,424/1,551,382 = 1,551,382/x
3. Step 3: Cross multiply
   721,424x = 1,551,382 × 1,551,382
4. Step 4: Simplify right side
   721,424x = 2,406,786,109,924
5. Step 5: Solve for x
   x = 2,406,786,109,924/721,424
6. Step 6: Final answer
   x = 3,336,160.30