Finding the Third Proportional to 430,064 and 683,111.50

Step by Step Solution

1. Step 1: Write the proportion equation
   430,064 : 683,111.50 = 683,111.50 : x
2. Step 2: Convert to fraction form
   430,064/683,111.50 = 683,111.50/x
3. Step 3: Cross multiply
   430,064x = 683,111.50 × 683,111.50
4. Step 4: Simplify right side
   430,064x = 466,641,321,432.25
5. Step 5: Solve for x
   x = 466,641,321,432.25/430,064
6. Step 6: Final answer
   x = 1,085,050.88