Finding the Third Proportional to 983,311.50 and 2,139,667.50

Step by Step Solution

1. Step 1: Write the proportion equation
   983,311.50 : 2,139,667.50 = 2,139,667.50 : x
2. Step 2: Convert to fraction form
   983,311.50/2,139,667.50 = 2,139,667.50/x
3. Step 3: Cross multiply
   983,311.50x = 2,139,667.50 × 2,139,667.50
4. Step 4: Simplify right side
   983,311.50x = 4,578,177,010,556.25
5. Step 5: Solve for x
   x = 4,578,177,010,556.25/983,311.50
6. Step 6: Final answer
   x = 4,655,876.61