Finding the Third Proportional to 644,154 and 1,402,518

Step by Step Solution

1. Step 1: Write the proportion equation
   644,154 : 1,402,518 = 1,402,518 : x
2. Step 2: Convert to fraction form
   644,154/1,402,518 = 1,402,518/x
3. Step 3: Cross multiply
   644,154x = 1,402,518 × 1,402,518
4. Step 4: Simplify right side
   644,154x = 1,967,056,740,324
5. Step 5: Solve for x
   x = 1,967,056,740,324/644,154
6. Step 6: Final answer
   x = 3,053,705.70