Finding the Third Proportional to 442,139.50 and 947,315

Step by Step Solution

1. Step 1: Write the proportion equation
   442,139.50 : 947,315 = 947,315 : x
2. Step 2: Convert to fraction form
   442,139.50/947,315 = 947,315/x
3. Step 3: Cross multiply
   442,139.50x = 947,315 × 947,315
4. Step 4: Simplify right side
   442,139.50x = 897,405,709,225
5. Step 5: Solve for x
   x = 897,405,709,225/442,139.50
6. Step 6: Final answer
   x = 2,029,689.07