Finding the Third Proportional to 326,748 and 711,628.50

Step by Step Solution

1. Step 1: Write the proportion equation
   326,748 : 711,628.50 = 711,628.50 : x
2. Step 2: Convert to fraction form
   326,748/711,628.50 = 711,628.50/x
3. Step 3: Cross multiply
   326,748x = 711,628.50 × 711,628.50
4. Step 4: Simplify right side
   326,748x = 506,415,122,012.25
5. Step 5: Solve for x
   x = 506,415,122,012.25/326,748
6. Step 6: Final answer
   x = 1,549,864.49