Finding the Third Proportional to 551,490 and 759,430.50

Step by Step Solution

1. Step 1: Write the proportion equation
   551,490 : 759,430.50 = 759,430.50 : x
2. Step 2: Convert to fraction form
   551,490/759,430.50 = 759,430.50/x
3. Step 3: Cross multiply
   551,490x = 759,430.50 × 759,430.50
4. Step 4: Simplify right side
   551,490x = 576,734,684,330.25
5. Step 5: Solve for x
   x = 576,734,684,330.25/551,490
6. Step 6: Final answer
   x = 1,045,775.42