Finding the Third Proportional to 306,372 and 673,219.50

Step by Step Solution

1. Step 1: Write the proportion equation
   306,372 : 673,219.50 = 673,219.50 : x
2. Step 2: Convert to fraction form
   306,372/673,219.50 = 673,219.50/x
3. Step 3: Cross multiply
   306,372x = 673,219.50 × 673,219.50
4. Step 4: Simplify right side
   306,372x = 453,224,495,180.25
5. Step 5: Solve for x
   x = 453,224,495,180.25/306,372
6. Step 6: Final answer
   x = 1,479,327.40