Finding the Third Proportional to 31,191,869 and 69,555,757

Step by Step Solution

1. Step 1: Write the proportion equation
   31,191,869 : 69,555,757 = 69,555,757 : x
2. Step 2: Convert to fraction form
   31,191,869/69,555,757 = 69,555,757/x
3. Step 3: Cross multiply
   31,191,869x = 69,555,757 × 69,555,757
4. Step 4: Simplify right side
   31,191,869x = 4,838,003,331,843,049
5. Step 5: Solve for x
   x = 4,838,003,331,843,049/31,191,869
6. Step 6: Final answer
   x = 155,104,631.01