Finding the Third Proportional to 31,003,349 and 72,414,809

Step by Step Solution

1. Step 1: Write the proportion equation
   31,003,349 : 72,414,809 = 72,414,809 : x
2. Step 2: Convert to fraction form
   31,003,349/72,414,809 = 72,414,809/x
3. Step 3: Cross multiply
   31,003,349x = 72,414,809 × 72,414,809
4. Step 4: Simplify right side
   31,003,349x = 5,243,904,562,506,481
5. Step 5: Solve for x
   x = 5,243,904,562,506,481/31,003,349
6. Step 6: Final answer
   x = 169,139,939.12