Finding the Third Proportional to 343,630.50 and 738,111

Step by Step Solution

1. Step 1: Write the proportion equation
   343,630.50 : 738,111 = 738,111 : x
2. Step 2: Convert to fraction form
   343,630.50/738,111 = 738,111/x
3. Step 3: Cross multiply
   343,630.50x = 738,111 × 738,111
4. Step 4: Simplify right side
   343,630.50x = 544,807,848,321
5. Step 5: Solve for x
   x = 544,807,848,321/343,630.50
6. Step 6: Final answer
   x = 1,585,446.72