Finding the Third Proportional to 315,091 and 484,317.50

Step by Step Solution

1. Step 1: Write the proportion equation
   315,091 : 484,317.50 = 484,317.50 : x
2. Step 2: Convert to fraction form
   315,091/484,317.50 = 484,317.50/x
3. Step 3: Cross multiply
   315,091x = 484,317.50 × 484,317.50
4. Step 4: Simplify right side
   315,091x = 234,563,440,806.25
5. Step 5: Solve for x
   x = 234,563,440,806.25/315,091
6. Step 6: Final answer
   x = 744,430.79