Finding the Third Proportional to 31,900,979.25 and 69,977,479.50

Step by Step Solution

1. Step 1: Write the proportion equation
   31,900,979.25 : 69,977,479.50 = 69,977,479.50 : x
2. Step 2: Convert to fraction form
   31,900,979.25/69,977,479.50 = 69,977,479.50/x
3. Step 3: Cross multiply
   31,900,979.25x = 69,977,479.50 × 69,977,479.50
4. Step 4: Simplify right side
   31,900,979.25x = 4,896,847,637,172,920
5. Step 5: Solve for x
   x = 4,896,847,637,172,920/31,900,979.25
6. Step 6: Final answer
   x = 153,501,483.41