Finding the Third Proportional to 302,178 and 453,268.50

Step by Step Solution

1. Step 1: Write the proportion equation
   302,178 : 453,268.50 = 453,268.50 : x
2. Step 2: Convert to fraction form
   302,178/453,268.50 = 453,268.50/x
3. Step 3: Cross multiply
   302,178x = 453,268.50 × 453,268.50
4. Step 4: Simplify right side
   302,178x = 205,452,333,092.25
5. Step 5: Solve for x
   x = 205,452,333,092.25/302,178
6. Step 6: Final answer
   x = 679,905.00