Finding the Third Proportional to 315,886 and 745,699.50

Step by Step Solution

1. Step 1: Write the proportion equation
   315,886 : 745,699.50 = 745,699.50 : x
2. Step 2: Convert to fraction form
   315,886/745,699.50 = 745,699.50/x
3. Step 3: Cross multiply
   315,886x = 745,699.50 × 745,699.50
4. Step 4: Simplify right side
   315,886x = 556,067,744,300.25
5. Step 5: Solve for x
   x = 556,067,744,300.25/315,886
6. Step 6: Final answer
   x = 1,760,343.11