Finding the Third Proportional to 715,878 and 1,003,428

Step by Step Solution

1. Step 1: Write the proportion equation
   715,878 : 1,003,428 = 1,003,428 : x
2. Step 2: Convert to fraction form
   715,878/1,003,428 = 1,003,428/x
3. Step 3: Cross multiply
   715,878x = 1,003,428 × 1,003,428
4. Step 4: Simplify right side
   715,878x = 1,006,867,751,184
5. Step 5: Solve for x
   x = 1,006,867,751,184/715,878
6. Step 6: Final answer
   x = 1,406,479.53