Finding the Third Proportional to 510,042 and 787,008

Step by Step Solution

1. Step 1: Write the proportion equation
   510,042 : 787,008 = 787,008 : x
2. Step 2: Convert to fraction form
   510,042/787,008 = 787,008/x
3. Step 3: Cross multiply
   510,042x = 787,008 × 787,008
4. Step 4: Simplify right side
   510,042x = 619,381,592,064
5. Step 5: Solve for x
   x = 619,381,592,064/510,042
6. Step 6: Final answer
   x = 1,214,373.70