Finding the Third Proportional to 720,388 and 1,567,624

Step by Step Solution

1. Step 1: Write the proportion equation
   720,388 : 1,567,624 = 1,567,624 : x
2. Step 2: Convert to fraction form
   720,388/1,567,624 = 1,567,624/x
3. Step 3: Cross multiply
   720,388x = 1,567,624 × 1,567,624
4. Step 4: Simplify right side
   720,388x = 2,457,445,005,376
5. Step 5: Solve for x
   x = 2,457,445,005,376/720,388
6. Step 6: Final answer
   x = 3,411,279.76