Finding the Third Proportional to 31,191,870 and 69,555,759

Step by Step Solution

1. Step 1: Write the proportion equation
   31,191,870 : 69,555,759 = 69,555,759 : x
2. Step 2: Convert to fraction form
   31,191,870/69,555,759 = 69,555,759/x
3. Step 3: Cross multiply
   31,191,870x = 69,555,759 × 69,555,759
4. Step 4: Simplify right side
   31,191,870x = 4,838,003,610,066,081
5. Step 5: Solve for x
   x = 4,838,003,610,066,081/31,191,870
6. Step 6: Final answer
   x = 155,104,634.96