Finding the Third Proportional to 718,586 and 1,577,142

Step by Step Solution

1. Step 1: Write the proportion equation
   718,586 : 1,577,142 = 1,577,142 : x
2. Step 2: Convert to fraction form
   718,586/1,577,142 = 1,577,142/x
3. Step 3: Cross multiply
   718,586x = 1,577,142 × 1,577,142
4. Step 4: Simplify right side
   718,586x = 2,487,376,888,164
5. Step 5: Solve for x
   x = 2,487,376,888,164/718,586
6. Step 6: Final answer
   x = 3,461,488.10