Finding the Third Proportional to 318,628.50 and 695,226

Step by Step Solution

1. Step 1: Write the proportion equation
   318,628.50 : 695,226 = 695,226 : x
2. Step 2: Convert to fraction form
   318,628.50/695,226 = 695,226/x
3. Step 3: Cross multiply
   318,628.50x = 695,226 × 695,226
4. Step 4: Simplify right side
   318,628.50x = 483,339,191,076
5. Step 5: Solve for x
   x = 483,339,191,076/318,628.50
6. Step 6: Final answer
   x = 1,516,936.47