Finding the Third Proportional to 721,566 and 1,554,978

Step by Step Solution

1. Step 1: Write the proportion equation
   721,566 : 1,554,978 = 1,554,978 : x
2. Step 2: Convert to fraction form
   721,566/1,554,978 = 1,554,978/x
3. Step 3: Cross multiply
   721,566x = 1,554,978 × 1,554,978
4. Step 4: Simplify right side
   721,566x = 2,417,956,580,484
5. Step 5: Solve for x
   x = 2,417,956,580,484/721,566
6. Step 6: Final answer
   x = 3,350,984.64