Finding the Third Proportional to 1,000,407 and 1,551,390

Step by Step Solution

1. Step 1: Write the proportion equation
   1,000,407 : 1,551,390 = 1,551,390 : x
2. Step 2: Convert to fraction form
   1,000,407/1,551,390 = 1,551,390/x
3. Step 3: Cross multiply
   1,000,407x = 1,551,390 × 1,551,390
4. Step 4: Simplify right side
   1,000,407x = 2,406,810,932,100
5. Step 5: Solve for x
   x = 2,406,810,932,100/1,000,407
6. Step 6: Final answer
   x = 2,405,831.76