Finding the Third Proportional to 202,153.50 and 336,892.50

Step by Step Solution

1. Step 1: Write the proportion equation
   202,153.50 : 336,892.50 = 336,892.50 : x
2. Step 2: Convert to fraction form
   202,153.50/336,892.50 = 336,892.50/x
3. Step 3: Cross multiply
   202,153.50x = 336,892.50 × 336,892.50
4. Step 4: Simplify right side
   202,153.50x = 113,496,556,556.25
5. Step 5: Solve for x
   x = 113,496,556,556.25/202,153.50
6. Step 6: Final answer
   x = 561,437.50