Finding the Third Proportional to 561,870 and 1,228,837.50

Step by Step Solution

1. Step 1: Write the proportion equation
   561,870 : 1,228,837.50 = 1,228,837.50 : x
2. Step 2: Convert to fraction form
   561,870/1,228,837.50 = 1,228,837.50/x
3. Step 3: Cross multiply
   561,870x = 1,228,837.50 × 1,228,837.50
4. Step 4: Simplify right side
   561,870x = 1,510,041,601,406.25
5. Step 5: Solve for x
   x = 1,510,041,601,406.25/561,870
6. Step 6: Final answer
   x = 2,687,528.43