Finding the Third Proportional to 315,889 and 745,706.50

Step by Step Solution

1. Step 1: Write the proportion equation
   315,889 : 745,706.50 = 745,706.50 : x
2. Step 2: Convert to fraction form
   315,889/745,706.50 = 745,706.50/x
3. Step 3: Cross multiply
   315,889x = 745,706.50 × 745,706.50
4. Step 4: Simplify right side
   315,889x = 556,078,184,142.25
5. Step 5: Solve for x
   x = 556,078,184,142.25/315,889
6. Step 6: Final answer
   x = 1,760,359.44