Finding the Third Proportional to 978,021 and 1,556,131.50

Step by Step Solution

1. Step 1: Write the proportion equation
   978,021 : 1,556,131.50 = 1,556,131.50 : x
2. Step 2: Convert to fraction form
   978,021/1,556,131.50 = 1,556,131.50/x
3. Step 3: Cross multiply
   978,021x = 1,556,131.50 × 1,556,131.50
4. Step 4: Simplify right side
   978,021x = 2,421,545,245,292.25
5. Step 5: Solve for x
   x = 2,421,545,245,292.25/978,021
6. Step 6: Final answer
   x = 2,475,964.47