Finding the Third Proportional to 720,386 and 1,567,620

Step by Step Solution

1. Step 1: Write the proportion equation
   720,386 : 1,567,620 = 1,567,620 : x
2. Step 2: Convert to fraction form
   720,386/1,567,620 = 1,567,620/x
3. Step 3: Cross multiply
   720,386x = 1,567,620 × 1,567,620
4. Step 4: Simplify right side
   720,386x = 2,457,432,464,400
5. Step 5: Solve for x
   x = 2,457,432,464,400/720,386
6. Step 6: Final answer
   x = 3,411,271.82