Finding the Third Proportional to 409,631.50 and 838,946

Step by Step Solution

1. Step 1: Write the proportion equation
   409,631.50 : 838,946 = 838,946 : x
2. Step 2: Convert to fraction form
   409,631.50/838,946 = 838,946/x
3. Step 3: Cross multiply
   409,631.50x = 838,946 × 838,946
4. Step 4: Simplify right side
   409,631.50x = 703,830,390,916
5. Step 5: Solve for x
   x = 703,830,390,916/409,631.50
6. Step 6: Final answer
   x = 1,718,203.78