Finding the Third Proportional to 1,142,918 and 1,556,707.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,142,918 : 1,556,707.50 = 1,556,707.50 : x
2. Step 2: Convert to fraction form
   1,142,918/1,556,707.50 = 1,556,707.50/x
3. Step 3: Cross multiply
   1,142,918x = 1,556,707.50 × 1,556,707.50
4. Step 4: Simplify right side
   1,142,918x = 2,423,338,240,556.25
5. Step 5: Solve for x
   x = 2,423,338,240,556.25/1,142,918
6. Step 6: Final answer
   x = 2,120,308.05