Finding the Third Proportional to 266,247 and 402,142.50

Step by Step Solution

1. Step 1: Write the proportion equation
   266,247 : 402,142.50 = 402,142.50 : x
2. Step 2: Convert to fraction form
   266,247/402,142.50 = 402,142.50/x
3. Step 3: Cross multiply
   266,247x = 402,142.50 × 402,142.50
4. Step 4: Simplify right side
   266,247x = 161,718,590,306.25
5. Step 5: Solve for x
   x = 161,718,590,306.25/266,247
6. Step 6: Final answer
   x = 607,400.61