Finding the Third Proportional to 120,743,991 and 188,290,434

Step by Step Solution

1. Step 1: Write the proportion equation
   120,743,991 : 188,290,434 = 188,290,434 : x
2. Step 2: Convert to fraction form
   120,743,991/188,290,434 = 188,290,434/x
3. Step 3: Cross multiply
   120,743,991x = 188,290,434 × 188,290,434
4. Step 4: Simplify right side
   120,743,991x = 35,453,287,535,908,356
5. Step 5: Solve for x
   x = 35,453,287,535,908,356/120,743,991
6. Step 6: Final answer
   x = 293,623,618.39