Finding the Third Proportional to 35,665,502 and 78,165,820

Step by Step Solution

1. Step 1: Write the proportion equation
   35,665,502 : 78,165,820 = 78,165,820 : x
2. Step 2: Convert to fraction form
   35,665,502/78,165,820 = 78,165,820/x
3. Step 3: Cross multiply
   35,665,502x = 78,165,820 × 78,165,820
4. Step 4: Simplify right side
   35,665,502x = 6,109,895,416,272,400
5. Step 5: Solve for x
   x = 6,109,895,416,272,400/35,665,502
6. Step 6: Final answer
   x = 171,311,072.99