Finding the Third Proportional to 381,970.50 and 831,909

Step by Step Solution

1. Step 1: Write the proportion equation
   381,970.50 : 831,909 = 831,909 : x
2. Step 2: Convert to fraction form
   381,970.50/831,909 = 831,909/x
3. Step 3: Cross multiply
   381,970.50x = 831,909 × 831,909
4. Step 4: Simplify right side
   381,970.50x = 692,072,584,281
5. Step 5: Solve for x
   x = 692,072,584,281/381,970.50
6. Step 6: Final answer
   x = 1,811,848.26