Finding the Third Proportional to 405,070.50 and 886,387

Step by Step Solution

1. Step 1: Write the proportion equation
   405,070.50 : 886,387 = 886,387 : x
2. Step 2: Convert to fraction form
   405,070.50/886,387 = 886,387/x
3. Step 3: Cross multiply
   405,070.50x = 886,387 × 886,387
4. Step 4: Simplify right side
   405,070.50x = 785,681,913,769
5. Step 5: Solve for x
   x = 785,681,913,769/405,070.50
6. Step 6: Final answer
   x = 1,939,617.71