Finding the Third Proportional to 342,716 and 742,632

Step by Step Solution

1. Step 1: Write the proportion equation
   342,716 : 742,632 = 742,632 : x
2. Step 2: Convert to fraction form
   342,716/742,632 = 742,632/x
3. Step 3: Cross multiply
   342,716x = 742,632 × 742,632
4. Step 4: Simplify right side
   342,716x = 551,502,287,424
5. Step 5: Solve for x
   x = 551,502,287,424/342,716
6. Step 6: Final answer
   x = 1,609,210.80