Finding the Third Proportional to 690,300 and 1,046,142

Step by Step Solution

1. Step 1: Write the proportion equation
   690,300 : 1,046,142 = 1,046,142 : x
2. Step 2: Convert to fraction form
   690,300/1,046,142 = 1,046,142/x
3. Step 3: Cross multiply
   690,300x = 1,046,142 × 1,046,142
4. Step 4: Simplify right side
   690,300x = 1,094,413,084,164
5. Step 5: Solve for x
   x = 1,094,413,084,164/690,300
6. Step 6: Final answer
   x = 1,585,416.61