Finding the Third Proportional to 715,358.50 and 1,074,421.50

Step by Step Solution

1. Step 1: Write the proportion equation
   715,358.50 : 1,074,421.50 = 1,074,421.50 : x
2. Step 2: Convert to fraction form
   715,358.50/1,074,421.50 = 1,074,421.50/x
3. Step 3: Cross multiply
   715,358.50x = 1,074,421.50 × 1,074,421.50
4. Step 4: Simplify right side
   715,358.50x = 1,154,381,559,662.25
5. Step 5: Solve for x
   x = 1,154,381,559,662.25/715,358.50
6. Step 6: Final answer
   x = 1,613,710.55