Finding the Third Proportional to 856,980 and 1,636,200

Step by Step Solution

1. Step 1: Write the proportion equation
   856,980 : 1,636,200 = 1,636,200 : x
2. Step 2: Convert to fraction form
   856,980/1,636,200 = 1,636,200/x
3. Step 3: Cross multiply
   856,980x = 1,636,200 × 1,636,200
4. Step 4: Simplify right side
   856,980x = 2,677,150,440,000
5. Step 5: Solve for x
   x = 2,677,150,440,000/856,980
6. Step 6: Final answer
   x = 3,123,935.73