Finding the Third Proportional to 342,117 and 492,810.75

Step by Step Solution

1. Step 1: Write the proportion equation
   342,117 : 492,810.75 = 492,810.75 : x
2. Step 2: Convert to fraction form
   342,117/492,810.75 = 492,810.75/x
3. Step 3: Cross multiply
   342,117x = 492,810.75 × 492,810.75
4. Step 4: Simplify right side
   342,117x = 242,862,435,315.56
5. Step 5: Solve for x
   x = 242,862,435,315.56/342,117
6. Step 6: Final answer
   x = 709,881.23