Finding the Third Proportional to 715,128 and 1,566,821

Step by Step Solution

1. Step 1: Write the proportion equation
   715,128 : 1,566,821 = 1,566,821 : x
2. Step 2: Convert to fraction form
   715,128/1,566,821 = 1,566,821/x
3. Step 3: Cross multiply
   715,128x = 1,566,821 × 1,566,821
4. Step 4: Simplify right side
   715,128x = 2,454,928,046,041
5. Step 5: Solve for x
   x = 2,454,928,046,041/715,128
6. Step 6: Final answer
   x = 3,432,851.25