Finding the Third Proportional to 371,137.50 and 813,208

Step by Step Solution

1. Step 1: Write the proportion equation
   371,137.50 : 813,208 = 813,208 : x
2. Step 2: Convert to fraction form
   371,137.50/813,208 = 813,208/x
3. Step 3: Cross multiply
   371,137.50x = 813,208 × 813,208
4. Step 4: Simplify right side
   371,137.50x = 661,307,251,264
5. Step 5: Solve for x
   x = 661,307,251,264/371,137.50
6. Step 6: Final answer
   x = 1,781,838.94