Finding the Third Proportional to 31,987,854 and 69,072,770

Step by Step Solution

1. Step 1: Write the proportion equation
   31,987,854 : 69,072,770 = 69,072,770 : x
2. Step 2: Convert to fraction form
   31,987,854/69,072,770 = 69,072,770/x
3. Step 3: Cross multiply
   31,987,854x = 69,072,770 × 69,072,770
4. Step 4: Simplify right side
   31,987,854x = 4,771,047,555,472,900
5. Step 5: Solve for x
   x = 4,771,047,555,472,900/31,987,854
6. Step 6: Final answer
   x = 149,151,848.56