Finding the Third Proportional to 615,270.50 and 931,406

Step by Step Solution

1. Step 1: Write the proportion equation
   615,270.50 : 931,406 = 931,406 : x
2. Step 2: Convert to fraction form
   615,270.50/931,406 = 931,406/x
3. Step 3: Cross multiply
   615,270.50x = 931,406 × 931,406
4. Step 4: Simplify right side
   615,270.50x = 867,517,136,836
5. Step 5: Solve for x
   x = 867,517,136,836/615,270.50
6. Step 6: Final answer
   x = 1,409,976.81