Finding the Third Proportional to 405,722 and 631,547.50

Step by Step Solution

1. Step 1: Write the proportion equation
   405,722 : 631,547.50 = 631,547.50 : x
2. Step 2: Convert to fraction form
   405,722/631,547.50 = 631,547.50/x
3. Step 3: Cross multiply
   405,722x = 631,547.50 × 631,547.50
4. Step 4: Simplify right side
   405,722x = 398,852,244,756.25
5. Step 5: Solve for x
   x = 398,852,244,756.25/405,722
6. Step 6: Final answer
   x = 983,067.83