Finding the Third Proportional to 58,408,711 and 90,798,978

Step by Step Solution

1. Step 1: Write the proportion equation
   58,408,711 : 90,798,978 = 90,798,978 : x
2. Step 2: Convert to fraction form
   58,408,711/90,798,978 = 90,798,978/x
3. Step 3: Cross multiply
   58,408,711x = 90,798,978 × 90,798,978
4. Step 4: Simplify right side
   58,408,711x = 8,244,454,405,844,484
5. Step 5: Solve for x
   x = 8,244,454,405,844,484/58,408,711
6. Step 6: Final answer
   x = 141,151,110.25