Finding the Third Proportional to 645,486 and 1,364,850

Step by Step Solution

1. Step 1: Write the proportion equation
   645,486 : 1,364,850 = 1,364,850 : x
2. Step 2: Convert to fraction form
   645,486/1,364,850 = 1,364,850/x
3. Step 3: Cross multiply
   645,486x = 1,364,850 × 1,364,850
4. Step 4: Simplify right side
   645,486x = 1,862,815,522,500
5. Step 5: Solve for x
   x = 1,862,815,522,500/645,486
6. Step 6: Final answer
   x = 2,885,911.58