Finding the Third Proportional to 405,231 and 881,812.50

Step by Step Solution

1. Step 1: Write the proportion equation
   405,231 : 881,812.50 = 881,812.50 : x
2. Step 2: Convert to fraction form
   405,231/881,812.50 = 881,812.50/x
3. Step 3: Cross multiply
   405,231x = 881,812.50 × 881,812.50
4. Step 4: Simplify right side
   405,231x = 777,593,285,156.25
5. Step 5: Solve for x
   x = 777,593,285,156.25/405,231
6. Step 6: Final answer
   x = 1,918,888.94