Finding the Third Proportional to 153,756 and 315,166.50

Step by Step Solution

1. Step 1: Write the proportion equation
   153,756 : 315,166.50 = 315,166.50 : x
2. Step 2: Convert to fraction form
   153,756/315,166.50 = 315,166.50/x
3. Step 3: Cross multiply
   153,756x = 315,166.50 × 315,166.50
4. Step 4: Simplify right side
   153,756x = 99,329,922,722.25
5. Step 5: Solve for x
   x = 99,329,922,722.25/153,756
6. Step 6: Final answer
   x = 646,023.07