Finding the Third Proportional to 59,900,121 and 87,603,781.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,900,121 : 87,603,781.50 = 87,603,781.50 : x
2. Step 2: Convert to fraction form
   59,900,121/87,603,781.50 = 87,603,781.50/x
3. Step 3: Cross multiply
   59,900,121x = 87,603,781.50 × 87,603,781.50
4. Step 4: Simplify right side
   59,900,121x = 7,674,422,533,099,742
5. Step 5: Solve for x
   x = 7,674,422,533,099,742/59,900,121
6. Step 6: Final answer
   x = 128,120,317.71