Finding the Third Proportional to 644,985 and 1,506,150

Step by Step Solution

1. Step 1: Write the proportion equation
   644,985 : 1,506,150 = 1,506,150 : x
2. Step 2: Convert to fraction form
   644,985/1,506,150 = 1,506,150/x
3. Step 3: Cross multiply
   644,985x = 1,506,150 × 1,506,150
4. Step 4: Simplify right side
   644,985x = 2,268,487,822,500
5. Step 5: Solve for x
   x = 2,268,487,822,500/644,985
6. Step 6: Final answer
   x = 3,517,117.18