Finding the Third Proportional to 1,005,554 and 1,406,572

Step by Step Solution

1. Step 1: Write the proportion equation
   1,005,554 : 1,406,572 = 1,406,572 : x
2. Step 2: Convert to fraction form
   1,005,554/1,406,572 = 1,406,572/x
3. Step 3: Cross multiply
   1,005,554x = 1,406,572 × 1,406,572
4. Step 4: Simplify right side
   1,005,554x = 1,978,444,791,184
5. Step 5: Solve for x
   x = 1,978,444,791,184/1,005,554
6. Step 6: Final answer
   x = 1,967,517.20