Finding the Third Proportional to 638,700 and 1,064,448

Step by Step Solution

1. Step 1: Write the proportion equation
   638,700 : 1,064,448 = 1,064,448 : x
2. Step 2: Convert to fraction form
   638,700/1,064,448 = 1,064,448/x
3. Step 3: Cross multiply
   638,700x = 1,064,448 × 1,064,448
4. Step 4: Simplify right side
   638,700x = 1,133,049,544,704
5. Step 5: Solve for x
   x = 1,133,049,544,704/638,700
6. Step 6: Final answer
   x = 1,773,993.34