Finding the Third Proportional to 189,478,674 and 414,619,456.50

Step by Step Solution

1. Step 1: Write the proportion equation
   189,478,674 : 414,619,456.50 = 414,619,456.50 : x
2. Step 2: Convert to fraction form
   189,478,674/414,619,456.50 = 414,619,456.50/x
3. Step 3: Cross multiply
   189,478,674x = 414,619,456.50 × 414,619,456.50
4. Step 4: Simplify right side
   189,478,674x = 171,909,293,708,355,392
5. Step 5: Solve for x
   x = 171,909,293,708,355,392/189,478,674
6. Step 6: Final answer
   x = 907,275,157.04