Finding the Third Proportional to 405,066.50 and 886,381

Step by Step Solution

1. Step 1: Write the proportion equation
   405,066.50 : 886,381 = 886,381 : x
2. Step 2: Convert to fraction form
   405,066.50/886,381 = 886,381/x
3. Step 3: Cross multiply
   405,066.50x = 886,381 × 886,381
4. Step 4: Simplify right side
   405,066.50x = 785,671,277,161
5. Step 5: Solve for x
   x = 785,671,277,161/405,066.50
6. Step 6: Final answer
   x = 1,939,610.60