Finding the Third Proportional to 638,634 and 1,064,346

Step by Step Solution

1. Step 1: Write the proportion equation
   638,634 : 1,064,346 = 1,064,346 : x
2. Step 2: Convert to fraction form
   638,634/1,064,346 = 1,064,346/x
3. Step 3: Cross multiply
   638,634x = 1,064,346 × 1,064,346
4. Step 4: Simplify right side
   638,634x = 1,132,832,407,716
5. Step 5: Solve for x
   x = 1,132,832,407,716/638,634
6. Step 6: Final answer
   x = 1,773,836.67