Finding the Third Proportional to 72,325,812 and 109,161,322.50

Step by Step Solution

1. Step 1: Write the proportion equation
   72,325,812 : 109,161,322.50 = 109,161,322.50 : x
2. Step 2: Convert to fraction form
   72,325,812/109,161,322.50 = 109,161,322.50/x
3. Step 3: Cross multiply
   72,325,812x = 109,161,322.50 × 109,161,322.50
4. Step 4: Simplify right side
   72,325,812x = 11,916,194,329,949,006
5. Step 5: Solve for x
   x = 11,916,194,329,949,006/72,325,812
6. Step 6: Final answer
   x = 164,757,145.48