Finding the Third Proportional to 412,871.50 and 638,094

Step by Step Solution

1. Step 1: Write the proportion equation
   412,871.50 : 638,094 = 638,094 : x
2. Step 2: Convert to fraction form
   412,871.50/638,094 = 638,094/x
3. Step 3: Cross multiply
   412,871.50x = 638,094 × 638,094
4. Step 4: Simplify right side
   412,871.50x = 407,163,952,836
5. Step 5: Solve for x
   x = 407,163,952,836/412,871.50
6. Step 6: Final answer
   x = 986,175.97