Finding the Third Proportional to 38,517,946 and 78,381,099.50

Step by Step Solution

1. Step 1: Write the proportion equation
   38,517,946 : 78,381,099.50 = 78,381,099.50 : x
2. Step 2: Convert to fraction form
   38,517,946/78,381,099.50 = 78,381,099.50/x
3. Step 3: Cross multiply
   38,517,946x = 78,381,099.50 × 78,381,099.50
4. Step 4: Simplify right side
   38,517,946x = 6,143,596,758,828,900
5. Step 5: Solve for x
   x = 6,143,596,758,828,900/38,517,946
6. Step 6: Final answer
   x = 159,499,594.26