Finding the Third Proportional to 9,291,879.56 and 19,928,536.31

Step by Step Solution

1. Step 1: Write the proportion equation
   9,291,879.56 : 19,928,536.31 = 19,928,536.31 : x
2. Step 2: Convert to fraction form
   9,291,879.56/19,928,536.31 = 19,928,536.31/x
3. Step 3: Cross multiply
   9,291,879.56x = 19,928,536.31 × 19,928,536.31
4. Step 4: Simplify right side
   9,291,879.56x = 397,146,559,558,631.12
5. Step 5: Solve for x
   x = 397,146,559,558,631.12/9,291,879.56
6. Step 6: Final answer
   x = 42,741,251.31