Finding the Third Proportional to 252,090 and 551,380.50

Step by Step Solution

1. Step 1: Write the proportion equation
   252,090 : 551,380.50 = 551,380.50 : x
2. Step 2: Convert to fraction form
   252,090/551,380.50 = 551,380.50/x
3. Step 3: Cross multiply
   252,090x = 551,380.50 × 551,380.50
4. Step 4: Simplify right side
   252,090x = 304,020,455,780.25
5. Step 5: Solve for x
   x = 304,020,455,780.25/252,090
6. Step 6: Final answer
   x = 1,205,999.67