Finding the Third Proportional to 294,921 and 645,036.38

Step by Step Solution

1. Step 1: Write the proportion equation
   294,921 : 645,036.38 = 645,036.38 : x
2. Step 2: Convert to fraction form
   294,921/645,036.38 = 645,036.38/x
3. Step 3: Cross multiply
   294,921x = 645,036.38 × 645,036.38
4. Step 4: Simplify right side
   294,921x = 416,071,925,073.14
5. Step 5: Solve for x
   x = 416,071,925,073.14/294,921
6. Step 6: Final answer
   x = 1,410,791.11