Finding the Third Proportional to 91,388.06 and 200,430.56

Step by Step Solution

1. Step 1: Write the proportion equation
   91,388.06 : 200,430.56 = 200,430.56 : x
2. Step 2: Convert to fraction form
   91,388.06/200,430.56 = 200,430.56/x
3. Step 3: Cross multiply
   91,388.06x = 200,430.56 × 200,430.56
4. Step 4: Simplify right side
   91,388.06x = 40,172,410,384.07
5. Step 5: Solve for x
   x = 40,172,410,384.07/91,388.06
6. Step 6: Final answer
   x = 439,580.50