Finding the Third Proportional to 405,126 and 873,049.50

Step by Step Solution

1. Step 1: Write the proportion equation
   405,126 : 873,049.50 = 873,049.50 : x
2. Step 2: Convert to fraction form
   405,126/873,049.50 = 873,049.50/x
3. Step 3: Cross multiply
   405,126x = 873,049.50 × 873,049.50
4. Step 4: Simplify right side
   405,126x = 762,215,429,450.25
5. Step 5: Solve for x
   x = 762,215,429,450.25/405,126
6. Step 6: Final answer
   x = 1,881,428.07