Finding the Third Proportional to 31,900,644 and 69,977,322

Step by Step Solution

1. Step 1: Write the proportion equation
   31,900,644 : 69,977,322 = 69,977,322 : x
2. Step 2: Convert to fraction form
   31,900,644/69,977,322 = 69,977,322/x
3. Step 3: Cross multiply
   31,900,644x = 69,977,322 × 69,977,322
4. Step 4: Simplify right side
   31,900,644x = 4,896,825,594,291,684
5. Step 5: Solve for x
   x = 4,896,825,594,291,684/31,900,644
6. Step 6: Final answer
   x = 153,502,405.60