Finding the Third Proportional to 340,818 and 738,058.50

Step by Step Solution

1. Step 1: Write the proportion equation
   340,818 : 738,058.50 = 738,058.50 : x
2. Step 2: Convert to fraction form
   340,818/738,058.50 = 738,058.50/x
3. Step 3: Cross multiply
   340,818x = 738,058.50 × 738,058.50
4. Step 4: Simplify right side
   340,818x = 544,730,349,422.25
5. Step 5: Solve for x
   x = 544,730,349,422.25/340,818
6. Step 6: Final answer
   x = 1,598,302.76