Finding the Third Proportional to 42,443,538 and 86,447,863.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,443,538 : 86,447,863.50 = 86,447,863.50 : x
2. Step 2: Convert to fraction form
   42,443,538/86,447,863.50 = 86,447,863.50/x
3. Step 3: Cross multiply
   42,443,538x = 86,447,863.50 × 86,447,863.50
4. Step 4: Simplify right side
   42,443,538x = 7,473,233,103,714,632
5. Step 5: Solve for x
   x = 7,473,233,103,714,632/42,443,538
6. Step 6: Final answer
   x = 176,074,697.25