Finding the Third Proportional to 342,117 and 531,036

Step by Step Solution

1. Step 1: Write the proportion equation
   342,117 : 531,036 = 531,036 : x
2. Step 2: Convert to fraction form
   342,117/531,036 = 531,036/x
3. Step 3: Cross multiply
   342,117x = 531,036 × 531,036
4. Step 4: Simplify right side
   342,117x = 281,999,233,296
5. Step 5: Solve for x
   x = 281,999,233,296/342,117
6. Step 6: Final answer
   x = 824,277.17