Finding the Third Proportional to 315,396 and 476,374.50

Step by Step Solution

1. Step 1: Write the proportion equation
   315,396 : 476,374.50 = 476,374.50 : x
2. Step 2: Convert to fraction form
   315,396/476,374.50 = 476,374.50/x
3. Step 3: Cross multiply
   315,396x = 476,374.50 × 476,374.50
4. Step 4: Simplify right side
   315,396x = 226,932,664,250.25
5. Step 5: Solve for x
   x = 226,932,664,250.25/315,396
6. Step 6: Final answer
   x = 719,516.62