Finding the Third Proportional to 342,124 and 492,814

Step by Step Solution

1. Step 1: Write the proportion equation
   342,124 : 492,814 = 492,814 : x
2. Step 2: Convert to fraction form
   342,124/492,814 = 492,814/x
3. Step 3: Cross multiply
   342,124x = 492,814 × 492,814
4. Step 4: Simplify right side
   342,124x = 242,865,638,596
5. Step 5: Solve for x
   x = 242,865,638,596/342,124
6. Step 6: Final answer
   x = 709,876.06