Finding the Third Proportional to 81,128,648 and 191,322,184

Step by Step Solution

1. Step 1: Write the proportion equation
   81,128,648 : 191,322,184 = 191,322,184 : x
2. Step 2: Convert to fraction form
   81,128,648/191,322,184 = 191,322,184/x
3. Step 3: Cross multiply
   81,128,648x = 191,322,184 × 191,322,184
4. Step 4: Simplify right side
   81,128,648x = 36,604,178,090,529,856
5. Step 5: Solve for x
   x = 36,604,178,090,529,856/81,128,648
6. Step 6: Final answer
   x = 451,186,837.11