Finding the Third Proportional to 387,205.50 and 830,460

Step by Step Solution

1. Step 1: Write the proportion equation
   387,205.50 : 830,460 = 830,460 : x
2. Step 2: Convert to fraction form
   387,205.50/830,460 = 830,460/x
3. Step 3: Cross multiply
   387,205.50x = 830,460 × 830,460
4. Step 4: Simplify right side
   387,205.50x = 689,663,811,600
5. Step 5: Solve for x
   x = 689,663,811,600/387,205.50
6. Step 6: Final answer
   x = 1,781,131.24