Finding the Third Proportional to 508,135.50 and 787,230

Step by Step Solution

1. Step 1: Write the proportion equation
   508,135.50 : 787,230 = 787,230 : x
2. Step 2: Convert to fraction form
   508,135.50/787,230 = 787,230/x
3. Step 3: Cross multiply
   508,135.50x = 787,230 × 787,230
4. Step 4: Simplify right side
   508,135.50x = 619,731,072,900
5. Step 5: Solve for x
   x = 619,731,072,900/508,135.50
6. Step 6: Final answer
   x = 1,219,617.75