Finding the Third Proportional to 343,684 and 754,611.50

Step by Step Solution

1. Step 1: Write the proportion equation
   343,684 : 754,611.50 = 754,611.50 : x
2. Step 2: Convert to fraction form
   343,684/754,611.50 = 754,611.50/x
3. Step 3: Cross multiply
   343,684x = 754,611.50 × 754,611.50
4. Step 4: Simplify right side
   343,684x = 569,438,515,932.25
5. Step 5: Solve for x
   x = 569,438,515,932.25/343,684
6. Step 6: Final answer
   x = 1,656,866.53