Finding the Third Proportional to 31,987,882.50 and 69,072,891

Step by Step Solution

1. Step 1: Write the proportion equation
   31,987,882.50 : 69,072,891 = 69,072,891 : x
2. Step 2: Convert to fraction form
   31,987,882.50/69,072,891 = 69,072,891/x
3. Step 3: Cross multiply
   31,987,882.50x = 69,072,891 × 69,072,891
4. Step 4: Simplify right side
   31,987,882.50x = 4,771,064,271,097,881
5. Step 5: Solve for x
   x = 4,771,064,271,097,881/31,987,882.50
6. Step 6: Final answer
   x = 149,152,238.23