Finding the Third Proportional to 291,114 and 636,536.25

Step by Step Solution

1. Step 1: Write the proportion equation
   291,114 : 636,536.25 = 636,536.25 : x
2. Step 2: Convert to fraction form
   291,114/636,536.25 = 636,536.25/x
3. Step 3: Cross multiply
   291,114x = 636,536.25 × 636,536.25
4. Step 4: Simplify right side
   291,114x = 405,178,397,564.06
5. Step 5: Solve for x
   x = 405,178,397,564.06/291,114
6. Step 6: Final answer
   x = 1,391,820.38