Finding the Third Proportional to 189,239 and 413,307.50

Step by Step Solution

1. Step 1: Write the proportion equation
   189,239 : 413,307.50 = 413,307.50 : x
2. Step 2: Convert to fraction form
   189,239/413,307.50 = 413,307.50/x
3. Step 3: Cross multiply
   189,239x = 413,307.50 × 413,307.50
4. Step 4: Simplify right side
   189,239x = 170,823,089,556.25
5. Step 5: Solve for x
   x = 170,823,089,556.25/189,239
6. Step 6: Final answer
   x = 902,684.38