Finding the Third Proportional to 31,987,893 and 69,072,912

Step by Step Solution

1. Step 1: Write the proportion equation
   31,987,893 : 69,072,912 = 69,072,912 : x
2. Step 2: Convert to fraction form
   31,987,893/69,072,912 = 69,072,912/x
3. Step 3: Cross multiply
   31,987,893x = 69,072,912 × 69,072,912
4. Step 4: Simplify right side
   31,987,893x = 4,771,067,172,159,744
5. Step 5: Solve for x
   x = 4,771,067,172,159,744/31,987,893
6. Step 6: Final answer
   x = 149,152,279.96