Finding the Third Proportional to 302,448 and 456,100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   302,448 : 456,100.50 = 456,100.50 : x
2. Step 2: Convert to fraction form
   302,448/456,100.50 = 456,100.50/x
3. Step 3: Cross multiply
   302,448x = 456,100.50 × 456,100.50
4. Step 4: Simplify right side
   302,448x = 208,027,666,100.25
5. Step 5: Solve for x
   x = 208,027,666,100.25/302,448
6. Step 6: Final answer
   x = 687,813.00