Finding the Third Proportional to 72,082,172 and 149,274,364

Step by Step Solution

1. Step 1: Write the proportion equation
   72,082,172 : 149,274,364 = 149,274,364 : x
2. Step 2: Convert to fraction form
   72,082,172/149,274,364 = 149,274,364/x
3. Step 3: Cross multiply
   72,082,172x = 149,274,364 × 149,274,364
4. Step 4: Simplify right side
   72,082,172x = 22,282,835,747,604,496
5. Step 5: Solve for x
   x = 22,282,835,747,604,496/72,082,172
6. Step 6: Final answer
   x = 309,131,025.46