Finding the Third Proportional to 266,619 and 374,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   266,619 : 374,980.50 = 374,980.50 : x
2. Step 2: Convert to fraction form
   266,619/374,980.50 = 374,980.50/x
3. Step 3: Cross multiply
   266,619x = 374,980.50 × 374,980.50
4. Step 4: Simplify right side
   266,619x = 140,610,375,380.25
5. Step 5: Solve for x
   x = 140,610,375,380.25/266,619
6. Step 6: Final answer
   x = 527,383.18