Finding the Third Proportional to 721,212 and 1,142,020

Step by Step Solution

1. Step 1: Write the proportion equation
   721,212 : 1,142,020 = 1,142,020 : x
2. Step 2: Convert to fraction form
   721,212/1,142,020 = 1,142,020/x
3. Step 3: Cross multiply
   721,212x = 1,142,020 × 1,142,020
4. Step 4: Simplify right side
   721,212x = 1,304,209,680,400
5. Step 5: Solve for x
   x = 1,304,209,680,400/721,212
6. Step 6: Final answer
   x = 1,808,358.26