Finding the Third Proportional to 644,224 and 947,392

Step by Step Solution

1. Step 1: Write the proportion equation
   644,224 : 947,392 = 947,392 : x
2. Step 2: Convert to fraction form
   644,224/947,392 = 947,392/x
3. Step 3: Cross multiply
   644,224x = 947,392 × 947,392
4. Step 4: Simplify right side
   644,224x = 897,551,601,664
5. Step 5: Solve for x
   x = 897,551,601,664/644,224
6. Step 6: Final answer
   x = 1,393,229.07