Finding the Third Proportional to 438,642.50 and 956,611

Step by Step Solution

1. Step 1: Write the proportion equation
   438,642.50 : 956,611 = 956,611 : x
2. Step 2: Convert to fraction form
   438,642.50/956,611 = 956,611/x
3. Step 3: Cross multiply
   438,642.50x = 956,611 × 956,611
4. Step 4: Simplify right side
   438,642.50x = 915,104,605,321
5. Step 5: Solve for x
   x = 915,104,605,321/438,642.50
6. Step 6: Final answer
   x = 2,086,219.66