Finding the Third Proportional to 603,477 and 911,368.50

Step by Step Solution

1. Step 1: Write the proportion equation
   603,477 : 911,368.50 = 911,368.50 : x
2. Step 2: Convert to fraction form
   603,477/911,368.50 = 911,368.50/x
3. Step 3: Cross multiply
   603,477x = 911,368.50 × 911,368.50
4. Step 4: Simplify right side
   603,477x = 830,592,542,792.25
5. Step 5: Solve for x
   x = 830,592,542,792.25/603,477
6. Step 6: Final answer
   x = 1,376,344.99