Finding the Third Proportional to 306,048 and 459,073.50

Step by Step Solution

1. Step 1: Write the proportion equation
   306,048 : 459,073.50 = 459,073.50 : x
2. Step 2: Convert to fraction form
   306,048/459,073.50 = 459,073.50/x
3. Step 3: Cross multiply
   306,048x = 459,073.50 × 459,073.50
4. Step 4: Simplify right side
   306,048x = 210,748,478,402.25
5. Step 5: Solve for x
   x = 210,748,478,402.25/306,048
6. Step 6: Final answer
   x = 688,612.50