Finding the Third Proportional to 148,443 and 311,467.50

Step by Step Solution

1. Step 1: Write the proportion equation
   148,443 : 311,467.50 = 311,467.50 : x
2. Step 2: Convert to fraction form
   148,443/311,467.50 = 311,467.50/x
3. Step 3: Cross multiply
   148,443x = 311,467.50 × 311,467.50
4. Step 4: Simplify right side
   148,443x = 97,012,003,556.25
5. Step 5: Solve for x
   x = 97,012,003,556.25/148,443
6. Step 6: Final answer
   x = 653,530.34