Finding the Third Proportional to 200,073 and 308,428.50

Step by Step Solution

1. Step 1: Write the proportion equation
   200,073 : 308,428.50 = 308,428.50 : x
2. Step 2: Convert to fraction form
   200,073/308,428.50 = 308,428.50/x
3. Step 3: Cross multiply
   200,073x = 308,428.50 × 308,428.50
4. Step 4: Simplify right side
   200,073x = 95,128,139,612.25
5. Step 5: Solve for x
   x = 95,128,139,612.25/200,073
6. Step 6: Final answer
   x = 475,467.15