Finding the Third Proportional to 387,880.50 and 822,411

Step by Step Solution

1. Step 1: Write the proportion equation
   387,880.50 : 822,411 = 822,411 : x
2. Step 2: Convert to fraction form
   387,880.50/822,411 = 822,411/x
3. Step 3: Cross multiply
   387,880.50x = 822,411 × 822,411
4. Step 4: Simplify right side
   387,880.50x = 676,359,852,921
5. Step 5: Solve for x
   x = 676,359,852,921/387,880.50
6. Step 6: Final answer
   x = 1,743,732.55