Finding the Third Proportional to 152,210 and 243,075

Step by Step Solution

1. Step 1: Write the proportion equation
   152,210 : 243,075 = 243,075 : x
2. Step 2: Convert to fraction form
   152,210/243,075 = 243,075/x
3. Step 3: Cross multiply
   152,210x = 243,075 × 243,075
4. Step 4: Simplify right side
   152,210x = 59,085,455,625
5. Step 5: Solve for x
   x = 59,085,455,625/152,210
6. Step 6: Final answer
   x = 388,183.80