Finding the Third Proportional to 554,835 and 838,084.50

Step by Step Solution

1. Step 1: Write the proportion equation
   554,835 : 838,084.50 = 838,084.50 : x
2. Step 2: Convert to fraction form
   554,835/838,084.50 = 838,084.50/x
3. Step 3: Cross multiply
   554,835x = 838,084.50 × 838,084.50
4. Step 4: Simplify right side
   554,835x = 702,385,629,140.25
5. Step 5: Solve for x
   x = 702,385,629,140.25/554,835
6. Step 6: Final answer
   x = 1,265,936.05