Finding the Third Proportional to 631,888 and 819,742.50

Step by Step Solution

1. Step 1: Write the proportion equation
   631,888 : 819,742.50 = 819,742.50 : x
2. Step 2: Convert to fraction form
   631,888/819,742.50 = 819,742.50/x
3. Step 3: Cross multiply
   631,888x = 819,742.50 × 819,742.50
4. Step 4: Simplify right side
   631,888x = 671,977,766,306.25
5. Step 5: Solve for x
   x = 671,977,766,306.25/631,888
6. Step 6: Final answer
   x = 1,063,444.42