Finding the Third Proportional to 12,377,311.50 and 18,921,719.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,377,311.50 : 18,921,719.25 = 18,921,719.25 : x
2. Step 2: Convert to fraction form
   12,377,311.50/18,921,719.25 = 18,921,719.25/x
3. Step 3: Cross multiply
   12,377,311.50x = 18,921,719.25 × 18,921,719.25
4. Step 4: Simplify right side
   12,377,311.50x = 358,031,459,375,820.56
5. Step 5: Solve for x
   x = 358,031,459,375,820.56/12,377,311.50
6. Step 6: Final answer
   x = 28,926,431.99