Finding the Third Proportional to 90,116,718,772 and 187,649,665,028

Step by Step Solution

1. Step 1: Write the proportion equation
   90,116,718,772 : 187,649,665,028 = 187,649,665,028 : x
2. Step 2: Convert to fraction form
   90,116,718,772/187,649,665,028 = 187,649,665,028/x
3. Step 3: Cross multiply
   90,116,718,772x = 187,649,665,028 × 187,649,665,028
4. Step 4: Simplify right side
   90,116,718,772x = 35,212,396,785,120,604,848,128
5. Step 5: Solve for x
   x = 35,212,396,785,120,604,848,128/90,116,718,772
6. Step 6: Final answer
   x = 390,742,109,399.37