Finding the Third Proportional to 366,742.50 and 561,009

Step by Step Solution

1. Step 1: Write the proportion equation
   366,742.50 : 561,009 = 561,009 : x
2. Step 2: Convert to fraction form
   366,742.50/561,009 = 561,009/x
3. Step 3: Cross multiply
   366,742.50x = 561,009 × 561,009
4. Step 4: Simplify right side
   366,742.50x = 314,731,098,081
5. Step 5: Solve for x
   x = 314,731,098,081/366,742.50
6. Step 6: Final answer
   x = 858,180.05