Finding the Third Proportional to 402,328.50 and 603,501

Step by Step Solution

1. Step 1: Write the proportion equation
   402,328.50 : 603,501 = 603,501 : x
2. Step 2: Convert to fraction form
   402,328.50/603,501 = 603,501/x
3. Step 3: Cross multiply
   402,328.50x = 603,501 × 603,501
4. Step 4: Simplify right side
   402,328.50x = 364,213,457,001
5. Step 5: Solve for x
   x = 364,213,457,001/402,328.50
6. Step 6: Final answer
   x = 905,263.88