Finding the Third Proportional to 376,078.50 and 783,261

Step by Step Solution

1. Step 1: Write the proportion equation
   376,078.50 : 783,261 = 783,261 : x
2. Step 2: Convert to fraction form
   376,078.50/783,261 = 783,261/x
3. Step 3: Cross multiply
   376,078.50x = 783,261 × 783,261
4. Step 4: Simplify right side
   376,078.50x = 613,497,794,121
5. Step 5: Solve for x
   x = 613,497,794,121/376,078.50
6. Step 6: Final answer
   x = 1,631,302.49