Finding the Third Proportional to 409,339.50 and 838,947

Step by Step Solution

1. Step 1: Write the proportion equation
   409,339.50 : 838,947 = 838,947 : x
2. Step 2: Convert to fraction form
   409,339.50/838,947 = 838,947/x
3. Step 3: Cross multiply
   409,339.50x = 838,947 × 838,947
4. Step 4: Simplify right side
   409,339.50x = 703,832,068,809
5. Step 5: Solve for x
   x = 703,832,068,809/409,339.50
6. Step 6: Final answer
   x = 1,719,433.55