Finding the Third Proportional to 152,140 and 222,576

Step by Step Solution

1. Step 1: Write the proportion equation
   152,140 : 222,576 = 222,576 : x
2. Step 2: Convert to fraction form
   152,140/222,576 = 222,576/x
3. Step 3: Cross multiply
   152,140x = 222,576 × 222,576
4. Step 4: Simplify right side
   152,140x = 49,540,075,776
5. Step 5: Solve for x
   x = 49,540,075,776/152,140
6. Step 6: Final answer
   x = 325,621.64