Finding the Third Proportional to 408,924 and 838,246.50

Step by Step Solution

1. Step 1: Write the proportion equation
   408,924 : 838,246.50 = 838,246.50 : x
2. Step 2: Convert to fraction form
   408,924/838,246.50 = 838,246.50/x
3. Step 3: Cross multiply
   408,924x = 838,246.50 × 838,246.50
4. Step 4: Simplify right side
   408,924x = 702,657,194,762.25
5. Step 5: Solve for x
   x = 702,657,194,762.25/408,924
6. Step 6: Final answer
   x = 1,718,307.55