Finding the Third Proportional to 38,517,938 and 78,381,082

Step by Step Solution

1. Step 1: Write the proportion equation
   38,517,938 : 78,381,082 = 78,381,082 : x
2. Step 2: Convert to fraction form
   38,517,938/78,381,082 = 78,381,082/x
3. Step 3: Cross multiply
   38,517,938x = 78,381,082 × 78,381,082
4. Step 4: Simplify right side
   38,517,938x = 6,143,594,015,490,724
5. Step 5: Solve for x
   x = 6,143,594,015,490,724/38,517,938
6. Step 6: Final answer
   x = 159,499,556.17